Indeed. Also it appears on any page with u=2 in the URL. Basically, if on your profile we search for your posts, check your stats by board, try to send you a PM directly from your profile instead of the site navigation or edit your profile as admin, then the flying walrus will appear.

I once considered doing a joke with a page that is basically a red div with yellow text warning that you got a virus or damaged hard drive, but some people would be so scared that they would not take any chance and never visit CodeWalrus again.